Increase in mortality due to myocardial infarction in the Brazilian city of São Paulo during winter

Sharovsky, Rodolfo; César, Luiz Antonio Machado

doi:10.1590/s0066-782x2002000100009

Cited by 25 publications

(10 citation statements)

References 20 publications

(28 reference statements)

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“…Our study confirms the seasonal variation of hospital admissions for STEMI that has been documented in both hemispheres [10, 11]. The first correlation between seasons and coronary thrombosis was documented in 1926 [12].…”

Section: Discussionsupporting

confidence: 89%

Seasonal Variations in Hospital Admissions for ST-Elevation Myocardial Infarction in New Zealand

et al. 2012

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BackgroundIncreased numbers of ST Elevation Myocardial Infarction (STEMI) admissions have been observed during winter in many countries. Our aim was to assess if seasonal variation of STEMI was present in the Waikato region of New Zealand.MethodsCase notes of patients admitted to Waikato hospital with STEMI between July 1998 and December 2007 were analysed. The incidence of STEMI during summer (December to February), autumn (March to May), winter (June to August) and spring (September to November) were calculated. The individuals were divided into 2 age groups of ≤ 70 and > 70 years of age.ResultsA total of 3,569 patients (mean age 66.9 ± 14.1 years, 64% men) were included. STEMI presentation during winter was significantly higher compared with summer (35 ± 13 versus 27.3 ± 11.3 cases per month, P < 0.02) with 3 additional STEMI admissions per fortnight during winter months. The increase in STEMI in winter was more apparent in patients > 70 years of age, with an 8.5% increase in winter admissions compared to summer (P < 0.01). There was no significant difference in the incidence of STEMI between other seasons.ConclusionThere is a higher incidence of STEMI during winter in the Waikato region compared with summer. This increased incidence is particularly pronounced in patients over 70 years of age. Further investigations are necessary to elicit potential causes.

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Section: Discussionsupporting

confidence: 89%

Seasonal Variations in Hospital Admissions for ST-Elevation Myocardial Infarction in New Zealand

et al. 2012

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“…Seasonal changes in São Paulo, located in the southeastern region of Brazil, are better defined and the incidence of rupture correlates with the expected pattern, with significantly higher death incidence noted in the colder months of May to September. Increased blood pressure levels, arterial spasm, pulmonary disease exacerbations and passive smoking in colder weather can explain this pattern, also observed in other cardiovascular conditions such as cerebral and coronary ischemia [66]. …”

Section: Discussionmentioning

confidence: 99%

Trends in aortic aneurysm- and dissection-related mortality in the state of São Paulo, Brazil, 1985–2009: multiple-cause-of-death analysis

2012

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BackgroundAortic aneurysm and dissection are important causes of death in older people. Ruptured aneurysms show catastrophic fatality rates reaching near 80%. Few population-based mortality studies have been published in the world and none in Brazil. The objective of the present study was to use multiple-cause-of-death methodology in the analysis of mortality trends related to aortic aneurysm and dissection in the state of Sao Paulo, between 1985 and 2009.MethodsWe analyzed mortality data from the Sao Paulo State Data Analysis System, selecting all death certificates on which aortic aneurysm and dissection were listed as a cause-of-death. The variables sex, age, season of the year, and underlying, associated or total mentions of causes of death were studied using standardized mortality rates, proportions and historical trends. Statistical analyses were performed by chi-square goodness-of-fit and H Kruskal-Wallis tests, and variance analysis. The joinpoint regression model was used to evaluate changes in age-standardized rates trends. A p value less than 0.05 was regarded as significant.ResultsOver a 25-year period, there were 42,615 deaths related to aortic aneurysm and dissection, of which 36,088 (84.7%) were identified as underlying cause and 6,527 (15.3%) as an associated cause-of-death. Dissection and ruptured aneurysms were considered as an underlying cause of death in 93% of the deaths. For the entire period, a significant increased trend of age-standardized death rates was observed in men and women, while certain non-significant decreases occurred from 1996/2004 until 2009. Abdominal aortic aneurysms and aortic dissections prevailed among men and aortic dissections and aortic aneurysms of unspecified site among women. In 1985 and 2009 death rates ratios of men to women were respectively 2.86 and 2.19, corresponding to a difference decrease between rates of 23.4%. For aortic dissection, ruptured and non-ruptured aneurysms, the overall mean ages at death were, respectively, 63.2, 68.4 and 71.6 years; while, as the underlying cause, the main associated causes of death were as follows: hemorrhages (in 43.8%/40.5%/13.9%); hypertensive diseases (in 49.2%/22.43%/24.5%) and atherosclerosis (in 14.8%/25.5%/15.3%); and, as associated causes, their principal overall underlying causes of death were diseases of the circulatory (55.7%), and respiratory (13.8%) systems and neoplasms (7.8%). A significant seasonal variation, with highest frequency in winter, occurred in deaths identified as underlying cause for aortic dissection, ruptured and non-ruptured aneurysms.ConclusionsThis study introduces the methodology of multiple-causes-of-death to enhance epidemiologic knowledge of aortic aneurysm and dissection in São Paulo, Brazil. The results presented confer light to the importance of mortality statistics and the need for epidemiologic studies to understand unique trends in our own population.

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“…Such data are extremely relevant, since they may act as flagpoles for public health policies. Hypothetically, for instance, public health programs focusing mostly hypertension control may be more impacting in reducing CD in the states as a whole, whereas in the capital areas programs should consider other risk factors, weather conditions included 13 .…”

Section: Discussionmentioning

confidence: 99%

Tendência do risco de morte por doenças circulatórias, cerebrovasculares e isquêmicas do coração em treze Estados do Brasil, de 1980 a 1998

Mansur¹,

Marinho²,

Timerman³

et al. 2006

Arq. Bras. Cardiol.

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Increase in mortality due to myocardial infarction in the Brazilian city of São Paulo during winter

Abstract: A marked seasonal variation in mortality due to myocardial infarction was observed in the city of São Paulo, with a significant increase in its magnitude and age distribution during the winter, similar to those reported in regions of North America and Europe with temperate climates.

Cited by 25 publications

References 20 publications

Seasonal Variations in Hospital Admissions for ST-Elevation Myocardial Infarction in New Zealand

Seasonal Variations in Hospital Admissions for ST-Elevation Myocardial Infarction in New Zealand

Trends in aortic aneurysm- and dissection-related mortality in the state of São Paulo, Brazil, 1985–2009: multiple-cause-of-death analysis

Tendência do risco de morte por doenças circulatórias, cerebrovasculares e isquêmicas do coração em treze Estados do Brasil, de 1980 a 1998

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